1cd71c089SLaurent Vivier /* 2cd71c089SLaurent Vivier * qemu user cpu loop 3cd71c089SLaurent Vivier * 4cd71c089SLaurent Vivier * Copyright (c) 2003-2008 Fabrice Bellard 5cd71c089SLaurent Vivier * 6cd71c089SLaurent Vivier * This program is free software; you can redistribute it and/or modify 7cd71c089SLaurent Vivier * it under the terms of the GNU General Public License as published by 8cd71c089SLaurent Vivier * the Free Software Foundation; either version 2 of the License, or 9cd71c089SLaurent Vivier * (at your option) any later version. 10cd71c089SLaurent Vivier * 11cd71c089SLaurent Vivier * This program is distributed in the hope that it will be useful, 12cd71c089SLaurent Vivier * but WITHOUT ANY WARRANTY; without even the implied warranty of 13cd71c089SLaurent Vivier * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14cd71c089SLaurent Vivier * GNU General Public License for more details. 15cd71c089SLaurent Vivier * 16cd71c089SLaurent Vivier * You should have received a copy of the GNU General Public License 17cd71c089SLaurent Vivier * along with this program; if not, see <http://www.gnu.org/licenses/>. 18cd71c089SLaurent Vivier */ 19cd71c089SLaurent Vivier 20cd71c089SLaurent Vivier #include "qemu/osdep.h" 21cd71c089SLaurent Vivier #include "qemu.h" 22cd71c089SLaurent Vivier #include "cpu_loop-common.h" 23cd71c089SLaurent Vivier 241ef7bca2SLaurent Vivier void cpu_loop(CPUOpenRISCState *env) 251ef7bca2SLaurent Vivier { 261ef7bca2SLaurent Vivier CPUState *cs = CPU(openrisc_env_get_cpu(env)); 271ef7bca2SLaurent Vivier int trapnr; 281ef7bca2SLaurent Vivier abi_long ret; 291ef7bca2SLaurent Vivier target_siginfo_t info; 301ef7bca2SLaurent Vivier 311ef7bca2SLaurent Vivier for (;;) { 321ef7bca2SLaurent Vivier cpu_exec_start(cs); 331ef7bca2SLaurent Vivier trapnr = cpu_exec(cs); 341ef7bca2SLaurent Vivier cpu_exec_end(cs); 351ef7bca2SLaurent Vivier process_queued_cpu_work(cs); 361ef7bca2SLaurent Vivier 371ef7bca2SLaurent Vivier switch (trapnr) { 381ef7bca2SLaurent Vivier case EXCP_SYSCALL: 391ef7bca2SLaurent Vivier env->pc += 4; /* 0xc00; */ 401ef7bca2SLaurent Vivier ret = do_syscall(env, 411ef7bca2SLaurent Vivier cpu_get_gpr(env, 11), /* return value */ 421ef7bca2SLaurent Vivier cpu_get_gpr(env, 3), /* r3 - r7 are params */ 431ef7bca2SLaurent Vivier cpu_get_gpr(env, 4), 441ef7bca2SLaurent Vivier cpu_get_gpr(env, 5), 451ef7bca2SLaurent Vivier cpu_get_gpr(env, 6), 461ef7bca2SLaurent Vivier cpu_get_gpr(env, 7), 471ef7bca2SLaurent Vivier cpu_get_gpr(env, 8), 0, 0); 481ef7bca2SLaurent Vivier if (ret == -TARGET_ERESTARTSYS) { 491ef7bca2SLaurent Vivier env->pc -= 4; 501ef7bca2SLaurent Vivier } else if (ret != -TARGET_QEMU_ESIGRETURN) { 511ef7bca2SLaurent Vivier cpu_set_gpr(env, 11, ret); 521ef7bca2SLaurent Vivier } 531ef7bca2SLaurent Vivier break; 541ef7bca2SLaurent Vivier case EXCP_DPF: 551ef7bca2SLaurent Vivier case EXCP_IPF: 561ef7bca2SLaurent Vivier case EXCP_RANGE: 571ef7bca2SLaurent Vivier info.si_signo = TARGET_SIGSEGV; 581ef7bca2SLaurent Vivier info.si_errno = 0; 591ef7bca2SLaurent Vivier info.si_code = TARGET_SEGV_MAPERR; 601ef7bca2SLaurent Vivier info._sifields._sigfault._addr = env->pc; 611ef7bca2SLaurent Vivier queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info); 621ef7bca2SLaurent Vivier break; 631ef7bca2SLaurent Vivier case EXCP_ALIGN: 641ef7bca2SLaurent Vivier info.si_signo = TARGET_SIGBUS; 651ef7bca2SLaurent Vivier info.si_errno = 0; 661ef7bca2SLaurent Vivier info.si_code = TARGET_BUS_ADRALN; 671ef7bca2SLaurent Vivier info._sifields._sigfault._addr = env->pc; 681ef7bca2SLaurent Vivier queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info); 691ef7bca2SLaurent Vivier break; 701ef7bca2SLaurent Vivier case EXCP_ILLEGAL: 711ef7bca2SLaurent Vivier info.si_signo = TARGET_SIGILL; 721ef7bca2SLaurent Vivier info.si_errno = 0; 731ef7bca2SLaurent Vivier info.si_code = TARGET_ILL_ILLOPC; 741ef7bca2SLaurent Vivier info._sifields._sigfault._addr = env->pc; 751ef7bca2SLaurent Vivier queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info); 761ef7bca2SLaurent Vivier break; 771ef7bca2SLaurent Vivier case EXCP_FPE: 781ef7bca2SLaurent Vivier info.si_signo = TARGET_SIGFPE; 791ef7bca2SLaurent Vivier info.si_errno = 0; 801ef7bca2SLaurent Vivier info.si_code = 0; 811ef7bca2SLaurent Vivier info._sifields._sigfault._addr = env->pc; 821ef7bca2SLaurent Vivier queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info); 831ef7bca2SLaurent Vivier break; 841ef7bca2SLaurent Vivier case EXCP_INTERRUPT: 851ef7bca2SLaurent Vivier /* We processed the pending cpu work above. */ 861ef7bca2SLaurent Vivier break; 871ef7bca2SLaurent Vivier case EXCP_DEBUG: 88*b10089a1SPeter Maydell info.si_signo = TARGET_SIGTRAP; 891ef7bca2SLaurent Vivier info.si_errno = 0; 901ef7bca2SLaurent Vivier info.si_code = TARGET_TRAP_BRKPT; 911ef7bca2SLaurent Vivier queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info); 921ef7bca2SLaurent Vivier break; 931ef7bca2SLaurent Vivier case EXCP_ATOMIC: 941ef7bca2SLaurent Vivier cpu_exec_step_atomic(cs); 951ef7bca2SLaurent Vivier break; 961ef7bca2SLaurent Vivier default: 971ef7bca2SLaurent Vivier g_assert_not_reached(); 981ef7bca2SLaurent Vivier } 991ef7bca2SLaurent Vivier process_pending_signals(env); 1001ef7bca2SLaurent Vivier } 1011ef7bca2SLaurent Vivier } 1021ef7bca2SLaurent Vivier 103cd71c089SLaurent Vivier void target_cpu_copy_regs(CPUArchState *env, struct target_pt_regs *regs) 104cd71c089SLaurent Vivier { 1051ef7bca2SLaurent Vivier int i; 1061ef7bca2SLaurent Vivier 1071ef7bca2SLaurent Vivier for (i = 0; i < 32; i++) { 1081ef7bca2SLaurent Vivier cpu_set_gpr(env, i, regs->gpr[i]); 1091ef7bca2SLaurent Vivier } 1101ef7bca2SLaurent Vivier env->pc = regs->pc; 1111ef7bca2SLaurent Vivier cpu_set_sr(env, regs->sr); 112cd71c089SLaurent Vivier } 113